<html>
<head>
<title>Sample JWS Verification Application</title>
<script language="JavaScript" type="text/javascript" src="../jsrsasign-all-min.js"></script>

<style type="text/css">
TD  {vertical-align: top; border: solid 1px #000000; }
</style>
<script language="JavaScript" type="text/javascript">
function doVerify() {
  var sJWS = document.form1.jws1.value;
  var sCert = document.form1.cert1.value;
  var pubKey;

  var jws = new KJUR.jws.JWS();
  var result = 0;
  try {
    pubKey = KEYUTIL.getKey(sCert);
    jws.parseJWS(sJWS);
    result = KJUR.jws.JWS.verify(sJWS, pubKey, ["RS256"]);
  } catch (ex) {
    alert("Error: " + ex);
    result = 0;
  }

  document.form1.im_enchead1.value = jws.parsedJWS.headB64U;
  document.form1.im_encpayload1.value = jws.parsedJWS.payloadB64U;
  document.form1.im_encsigval1.value = jws.parsedJWS.sigvalB64U;
  document.form1.im_siginput1.value = jws.parsedJWS.si;
  document.form1.im_sigval_h1.value = jws.parsedJWS.sigvalH;

  document.form1.im_head1.value = jws.parsedJWS.headS;
  document.form1.im_payload1.value = jws.parsedJWS.payloadS;

  if (result == 1) {
    alert("JWS signature is *Valid*.");
  } else {
    alert("JWS signature is *Invalid*.");
  }
}
</script>
</head>

<body>

<form name="form1">
<h1>Sample JWS Verification Application</h1>

<p>
Default values are cited from <a href="http://tools.ietf.org/html/draft-jones-json-web-signature-04#appendix-A.2" target="_blank">
"draft-jones-json-web-signature-04 Annex.2"</a>.
</p>

<table width="100%">
<tbody>
<tr><td rowspan="2">Input</td><td>JWS</td><td colspan="2">
<textarea name="jws1" rows="8" cols="100">eyJhbGciOiJSUzI1NiJ9.eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9leGFtcGxlLmNvbS9pc19yb290Ijp0cnVlfQ.qCW4l5nfdvBt-yl_OiYRFrKkribqbDbmQ9ULyemAgCNXAAr70hN5-IERIefzySpm6Er4UuX_aXcnIXgMvK-hFMFhLOuJckrDEe1Pz-OzqScvGSJUbeOsd_nB9E2BNVYZrgMESQOifiEyUtWdbzCoMgf9nQg2AEWbVSaPImqQkGp-JZsJsvMUC-3A3RcimGIjLv-A8skyhNufASd6DPgk46Ydqt6vi2L6d2InvZSkhTSsYhbfm9TgrKyA906YHE0zE-asuXAzI1ISPxAjlO8ZhekEvg6teaa-1cSQQdOFj-ZWpqVsEI1YXr7zuvugWQhqfBqqPcT6fP5t3ff8FKwV9w</textarea></td></tr>
<tr><td>PEM X.509 Certificate verify with</td><td colspan="2">
<textarea name="cert1" cols="80" rows="8">-----BEGIN CERTIFICATE-----
MIIDMjCCAhqgAwIBAgIJAKMfG/B2MKd5MA0GCSqGSIb3DQEBBQUAMBoxCzAJBgNV
BAYTAkpQMQswCQYDVQQKEwJ6MzAeFw0xMDA1MzEwNjE4MDhaFw0yMDA1MjgwNjE4
MDhaMBoxCzAJBgNVBAYTAkpQMQswCQYDVQQKEwJ6MzCCASIwDQYJKoZIhvcNAQEB
BQADggEPADCCAQoCggEBAOKosPD1rOz6Z5wtgVBKA0XMFxfKavF09f9x3N3LlCcF
/6LTXn6/waJq93bTNBESzdw63qQl77sxFORXCVQ1Ad7CPqRbY4ywVw/8yZri9wH4
PdSfae/fg5vuN3EesLissFSceQySHbMBeqEAw84cLvPXdlecdNmlwfS6nV5D8Ijt
HkebP8R14AEpfoag3VS/YS6Hd4hmvZ1e3BJQm3JfFFVzTyZ0AH2oimsxfoQnZf7M
qyIdCgmeaKYILEyYm6PKhVwZhuD5E+WG4RxNdcGCiC8GRUr2fYnXUT0CtwrYBYgZ
121cFObeu7Z/aTIsx4MqYLHwaHqMga6U7nOHoEgqY7ECAwEAAaN7MHkwHQYDVR0O
BBYEFKO4NcUDh3J5c7XD7j4pVXnzIfALMEoGA1UdIwRDMEGAFKO4NcUDh3J5c7XD
7j4pVXnzIfALoR6kHDAaMQswCQYDVQQGEwJKUDELMAkGA1UEChMCejOCCQCjHxvw
djCneTAMBgNVHRMEBTADAQH/MA0GCSqGSIb3DQEBBQUAA4IBAQC8JdiwJF22/3nB
IxJT/gXXN10cub6O+x9q64ls7dpGpBvbi4/lJgZOsZqoJiswU5WOKZ4MTOmMHe4W
e/MHuhcjsgf9EHHYZQ1reBYi/l9mBBbYFGs0zSv1CyjbwkyF36nr/8sWdYf4ZtXQ
nzTGvoa6oTOOTmmj3Bwl3CHwonvgAJUCHY/UmWFzH8Sf0dDW7iJBj+ZWfjuSlSQe
2ninrEpfA4v2V1p3LOH+layZLDMJHkNCq8eoU1MbJi07cHxLWtlwliNOiRboaiYl
1wtWR7ZY4HZCPeyb0tanf58rBQAXElaCF3fmfHrlpxoJBsQP1NbFrBs2haOIEZ4E
K3V9/Bpi
-----END CERTIFICATE-----</textarea>
</td></tr>
<tr><td colspan="4">
<input type="button" value="Verify JWS Signature" onClick="doVerify();"/><br/>
</td></tr>

<tr><td colspan="2">Encoded Head</td><td colspan="2">
<textarea name="im_enchead1" cols="100" rows="1" readonly></textarea>
</td></tr>
<tr><td colspan="2">Encoded Payload</td><td colspan="2">
<textarea name="im_encpayload1" cols="100" rows="1" readonly></textarea>
</td></tr>
<tr><td colspan="2">Encoded Signature Value</td><td colspan="2">
<textarea name="im_encsigval1" cols="100" rows="6" readonly></textarea>
</td></tr>
<tr><td colspan="2">Signature Input</td><td colspan="2">
<textarea name="im_siginput1" cols="100" rows="3" readonly></textarea>
</td></tr>
<tr><td colspan="2">Signature Value (Hex)</td><td colspan="2">
<textarea name="im_sigval_h1" cols="100" rows="8" readonly></textarea>
</td></tr>
<tr><td colspan="2">Head</td><td colspan="2">
<textarea name="im_head1" cols="100" rows="2" readonly></textarea>
</td></tr>
<tr><td colspan="2">Payload</td><td colspan="2">
<textarea name="im_payload1" cols="100" rows="3" readonly></textarea>
</td></tr>
</tbody>

</table>
</form>

<h3>USAGE</h3>
<ol>
<li>Fill JWS signature, modulus and public exponent of a public key if you need.</li>
<li>Then just press "Verify JWS Signature" button.</li>
<li>If the signature is valid, you will see a dialog 'JWS signature is '*Valid*'.
You may see an error dialog if it is malformed signature.</li>
</li>
<li>As for JWS signature generation, please see <a href="sample_generate.html">this sample</a>.</li>
</ol>

<center>
Copyright &copy; 2012-2016 Kenji Urushima, All Rights Reserved.
</center>

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